* 29-Oct-97 JLH pass ";!" comments to output file
*/
+#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <setjmp.h>
#include "asm.h"
-/*)Module asmain.c
+/*)Module asmain.c
*
- * The module asmain.c includes the command argument parser,
- * the three pass sequencer, and the machine independent
- * assembler parsing code.
+ * The module asmain.c includes the command argument parser,
+ * the three pass sequencer, and the machine independent
+ * assembler parsing code.
*
- * asmain.c contains the following functions:
- * VOID main(argc, argv)
- * VOID asexit()
- * VOID asmbl()
- * FILE * afile(fn, ft, wf)
- * VOID newdot(nap)
- * VOID phase(ap, a)
- * VOID usage()
+ * asmain.c contains the following functions:
+ * VOID main(argc, argv)
+ * VOID asexit()
+ * VOID asmbl()
+ * FILE * afile(fn, ft, wf)
+ * VOID newdot(nap)
+ * VOID phase(ap, a)
+ * VOID usage()
*
- * asmain.c contains the array char *usetxt[] which
- * references the usage text strings printed by usage().
+ * asmain.c contains the array char *usetxt[] which
+ * references the usage text strings printed by usage().
*/
-/*)Function VOID main(argc, argv)
+static const char *search_path[100];
+static int search_path_length;
+
+/**
+ * The search_path_append is used to append another directory to the end
+ * of the include file search path.
*
- * int argc argument count
- * char * argv array of pointers to argument strings
+ * @param dir
+ * The directory to be added to the path.
+ */
+void
+search_path_append(const char *dir)
+{
+ if (search_path_length < sizeof(search_path)/sizeof(char*))
+ {
+ search_path[search_path_length++] = dir;
+ }
+}
+
+/**
+ * The search_path_fopen function is used to open the named file. If
+ * the file isn't in the current directory, the search path is then used
+ * to build a series of possible file names, and attempts to open them.
+ * The first found is used.
*
- * The function main() is the entry point to the assembler.
- * The purpose of main() is to (1) parse the command line
- * arguments for options and source file specifications and
- * (2) to process the source files through the 3 pass assembler.
- * Before each assembler pass various variables are initialized
- * and source files are rewound to their beginning. During each
- * assembler pass each assembler-source text line is processed.
- * After each assembler pass the assembler information is flushed
- * to any opened output files and the if-else-endif processing
- * is checked for proper termination.
+ * @param filename
+ * The name of the file to be opened.
+ * @param mode
+ * The mode of the file to be opened.
+ * @returns
+ * what the fopen function would return on success, or NULL if the
+ * file is not anywhere in the search path.
+ */
+static FILE *
+search_path_fopen(const char *filename, const char *mode)
+{
+ FILE *fp;
+ int j;
+
+ fp = fopen(filename, mode);
+ if (fp != NULL || filename[0] == '/' || filename[0] == '\\')
+ return fp;
+ for (j = 0; j < search_path_length; ++j)
+ {
+ char path[2000];
+
+ strncpy(path, search_path[j], sizeof(path));
+ if ((path[strlen(path) - 1] != '/') &&
+ (path[strlen(path) - 1] != DIR_SEPARATOR_CHAR))
+ {
+ strncat(path, DIR_SEPARATOR_STRING, sizeof(path));
+ }
+ strncat(path, filename, sizeof(path));
+ fp = fopen(path, mode);
+ if (fp != NULL)
+ return fp;
+ }
+ errno = ENOENT;
+ return NULL;
+}
+
+/*)Function VOID main(argc, argv)
+ *
+ * int argc argument count
+ * char * argv array of pointers to argument strings
+ *
+ * The function main() is the entry point to the assembler.
+ * The purpose of main() is to (1) parse the command line
+ * arguments for options and source file specifications and
+ * (2) to process the source files through the 3 pass assembler.
+ * Before each assembler pass various variables are initialized
+ * and source files are rewound to their beginning. During each
+ * assembler pass each assembler-source text line is processed.
+ * After each assembler pass the assembler information is flushed
+ * to any opened output files and the if-else-endif processing
+ * is checked for proper termination.
*
- * The function main() is also responsible for opening all
- * output files (REL, LST, and SYM), sequencing the global (-g)
- * and all-global (-a) variable definitions, and dumping the
- * REL file header information.
+ * The function main() is also responsible for opening all
+ * output files (REL, LST, and SYM), sequencing the global (-g)
+ * and all-global (-a) variable definitions, and dumping the
+ * REL file header information.
*
- * local variables:
- * char * p pointer to argument string
- * int c character from argument string
- * int i argument loop counter
- * area * ap pointer to area structure
+ * local variables:
+ * char * p pointer to argument string
+ * int c character from argument string
+ * int i argument loop counter
+ * area * ap pointer to area structure
*
- * global variables:
- * int aflag -a, make all symbols global flag
- * char afn[] afile() constructed filespec
- * area * areap pointer to an area structure
- * int cb[] array of assembler output values
- * int cbt[] array of assembler relocation types
- * describing the data in cb[]
- * int cfile current file handle index
- * of input assembly files
- * int * cp pointer to assembler output array cb[]
- * int * cpt pointer to assembler relocation type
- * output array cbt[]
- * char eb[] array of generated error codes
- * char * ep pointer into error list array eb[]
- * int fflag -f(f), relocations flagged flag
- * int flevel IF-ELSE-ENDIF flag will be non
- * zero for false conditional case
- * Addr_T fuzz tracks pass to pass changes in the
- * address of symbols caused by
- * variable length instruction formats
- * int gflag -g, make undefined symbols global flag
- * char ib[] assembler-source text line
- * int inpfil count of assembler
- * input files specified
- * int ifcnd[] array of IF statement condition
- * values (0 = FALSE) indexed by tlevel
- * int iflvl[] array of IF-ELSE-ENDIF flevel
- * values indexed by tlevel
- * int incfil current file handle index
- * for include files
- * char * ip pointer into the assembler-source
- * text line in ib[]
- * jmp_buf jump_env compiler dependent structure
- * used by setjmp() and longjmp()
- * int lflag -l, generate listing flag
- * int line current assembler source
- * line number
- * int lop current line number on page
- * int oflag -o, generate relocatable output flag
- * int jflag -j, generate debug info flag
- * int page current page number
- * int pflag enable listing pagination
- * int pass assembler pass number
- * int radix current number conversion radix:
- * 2 (binary), 8 (octal), 10 (decimal),
- * 16 (hexadecimal)
- * int sflag -s, generate symbol table flag
- * char srcfn[][] array of source file names
- * int srcline[] current source file line
- * char stb[] Subtitle string buffer
- * sym * symp pointer to a symbol structure
- * int tlevel current conditional level
- * int xflag -x, listing radix flag
- * FILE * lfp list output file handle
- * FILE * ofp relocation output file handle
- * FILE * tfp symbol table output file handle
- * FILE * sfp[] array of assembler-source file handles
+ * global variables:
+ * int aflag -a, make all symbols global flag
+ * char afn[] afile() constructed filespec
+ * area * areap pointer to an area structure
+ * int cb[] array of assembler output values
+ * int cbt[] array of assembler relocation types
+ * describing the data in cb[]
+ * int cfile current file handle index
+ * of input assembly files
+ * int * cp pointer to assembler output array cb[]
+ * int * cpt pointer to assembler relocation type
+ * output array cbt[]
+ * char eb[] array of generated error codes
+ * char * ep pointer into error list array eb[]
+ * int fflag -f(f), relocations flagged flag
+ * int flevel IF-ELSE-ENDIF flag will be non
+ * zero for false conditional case
+ * Addr_T fuzz tracks pass to pass changes in the
+ * address of symbols caused by
+ * variable length instruction formats
+ * int gflag -g, make undefined symbols global flag
+ * char ib[] assembler-source text line
+ * int inpfil count of assembler
+ * input files specified
+ * int ifcnd[] array of IF statement condition
+ * values (0 = FALSE) indexed by tlevel
+ * int iflvl[] array of IF-ELSE-ENDIF flevel
+ * values indexed by tlevel
+ * int incfil current file handle index
+ * for include files
+ * char * ip pointer into the assembler-source
+ * text line in ib[]
+ * jmp_buf jump_env compiler dependent structure
+ * used by setjmp() and longjmp()
+ * int lflag -l, generate listing flag
+ * int line current assembler source
+ * line number
+ * int lop current line number on page
+ * int oflag -o, generate relocatable output flag
+ * int jflag -j, generate debug info flag
+ * int page current page number
+ * int pflag enable listing pagination
+ * int pass assembler pass number
+ * int radix current number conversion radix:
+ * 2 (binary), 8 (octal), 10 (decimal),
+ * 16 (hexadecimal)
+ * int sflag -s, generate symbol table flag
+ * char srcfn[][] array of source file names
+ * int srcline[] current source file line
+ * char stb[] Subtitle string buffer
+ * sym * symp pointer to a symbol structure
+ * int tlevel current conditional level
+ * int xflag -x, listing radix flag
+ * FILE * lfp list output file handle
+ * FILE * ofp relocation output file handle
+ * FILE * tfp symbol table output file handle
+ * FILE * sfp[] array of assembler-source file handles
*
- * called functions:
- * FILE * afile() asmain.c
- * VOID allglob() assym.c
- * VOID asexit() asmain.c
- * VOID diag() assubr.c
- * VOID err() assubr.c
- * int fprintf() c-library
- * int as_getline() aslex.c
- * VOID list() aslist.c
- * VOID lstsym() aslist.c
- * VOID minit() ___mch.c
- * VOID newdot() asmain.c
- * VOID outchk() asout.c
- * VOID outgsd() asout.c
- * int rewind() c-library
- * int setjmp() c-library
- * VOID symglob() assym.c
- * VOID syminit() assym.c
- * VOID usage() asmain.c
+ * called functions:
+ * FILE * afile() asmain.c
+ * VOID allglob() assym.c
+ * VOID asexit() asmain.c
+ * VOID diag() assubr.c
+ * VOID err() assubr.c
+ * int fprintf() c-library
+ * int as_getline() aslex.c
+ * VOID list() aslist.c
+ * VOID lstsym() aslist.c
+ * VOID minit() ___mch.c
+ * VOID newdot() asmain.c
+ * VOID outchk() asout.c
+ * VOID outgsd() asout.c
+ * int rewind() c-library
+ * int setjmp() c-library
+ * VOID symglob() assym.c
+ * VOID syminit() assym.c
+ * VOID usage() asmain.c
*
- * side effects:
- * Completion of main() completes the assembly process.
- * REL, LST, and/or SYM files may be generated.
+ * side effects:
+ * Completion of main() completes the assembly process.
+ * REL, LST, and/or SYM files may be generated.
*/
int fatalErrors=0;
main(argc, argv)
char *argv[];
{
- register char *p;
- register int c, i;
- struct area *ap;
-
- /*fprintf(stdout, "\n");*/
- inpfil = -1;
- pflag = 1;
- for (i=1; i<argc; ++i) {
- p = argv[i];
- if (*p == '-') {
- if (inpfil >= 0)
- usage();
- ++p;
- while ((c = *p++) != 0)
- switch(c) {
-
- case 'a':
- case 'A':
- ++aflag;
- break;
-
- case 'c':
- case 'C':
- ++cflag;
- break;
-
- case 'g':
- case 'G':
- ++gflag;
- break;
-
- case 'j': /* JLH: debug info */
- case 'J':
- ++jflag;
- ++oflag; /* force object */
- break;
-
- case 'l':
- case 'L':
- ++lflag;
- break;
-
- case 'o':
- case 'O':
- ++oflag;
- break;
-
- case 's':
- case 'S':
- ++sflag;
- break;
-
- case 'p':
- case 'P':
- pflag = 0;
- break;
-
- case 'x':
- case 'X':
- xflag = 0;
- break;
-
- case 'q':
- case 'Q':
- xflag = 1;
- break;
-
- case 'd':
- case 'D':
- xflag = 2;
- break;
-
- case 'f':
- case 'F':
- ++fflag;
- break;
-
- default:
- usage();
- }
- } else {
- if (++inpfil == MAXFIL) {
- fprintf(stderr, "too many input files\n");
- asexit(1);
- }
- sfp[inpfil] = afile(p, "", 0);
- strcpy(srcfn[inpfil],afn);
- if (inpfil == 0) {
- if (lflag)
- lfp = afile(p, "lst", 1);
- if (oflag) {
- ofp = afile(p, "rel", 1);
- // save the file name if we have to delete it on error
- strcpy(relFile,afn);
- }
- if (sflag)
- tfp = afile(p, "sym", 1);
- }
- }
- }
- if (inpfil < 0)
- usage();
- syminit();
- for (pass=0; pass<3; ++pass) {
- if (gflag && pass == 1)
- symglob();
- if (aflag && pass == 1)
- allglob();
- if (oflag && pass == 2)
- outgsd();
- flevel = 0;
- tlevel = 0;
- ifcnd[0] = 0;
- iflvl[0] = 0;
- radix = 10;
- srcline[0] = 0;
- page = 0;
- stb[0] = 0;
- lop = NLPP;
- cfile = 0;
- incfil = -1;
- for (i = 0; i <= inpfil; i++)
- rewind(sfp[i]);
- ap = areap;
- while (ap) {
- ap->a_fuzz = 0;
- ap->a_size = 0;
- ap = ap->a_ap;
- }
- fuzz = 0;
- dot.s_addr = 0;
- dot.s_area = &dca;
- symp = ˙
- minit();
- while (as_getline()) {
- cp = cb;
- cpt = cbt;
- ep = eb;
- ip = ib;
+ register char *p;
+ register int c, i;
+ struct area *ap;
+
+ /*fprintf(stdout, "\n");*/
+ inpfil = -1;
+ pflag = 1;
+ for (i=1; i<argc; ++i) {
+ p = argv[i];
+ if (*p == '-') {
+ if (inpfil >= 0)
+ usage();
+ ++p;
+ while ((c = *p++) != 0)
+ switch(c) {
+
+ case 'a':
+ case 'A':
+ ++aflag;
+ break;
+
+ case 'c':
+ case 'C':
+ ++cflag;
+ break;
+
+ case 'g':
+ case 'G':
+ ++gflag;
+ break;
+
+ case 'i':
+ case 'I':
+ search_path_append(p);
+ while (*p)
+ ++p;
+ break;
+
+ case 'j': /* JLH: debug info */
+ case 'J':
+ ++jflag;
+ ++oflag; /* force object */
+ break;
+
+ case 'l':
+ case 'L':
+ ++lflag;
+ break;
+
+ case 'o':
+ case 'O':
+ ++oflag;
+ break;
+
+ case 's':
+ case 'S':
+ ++sflag;
+ break;
+
+ case 'p':
+ case 'P':
+ pflag = 0;
+ break;
+
+ case 'x':
+ case 'X':
+ xflag = 0;
+ break;
+
+ case 'q':
+ case 'Q':
+ xflag = 1;
+ break;
+
+ case 'd':
+ case 'D':
+ xflag = 2;
+ break;
+
+ case 'f':
+ case 'F':
+ ++fflag;
+ break;
+
+ default:
+ usage();
+ }
+ } else {
+ if (++inpfil == MAXFIL) {
+ fprintf(stderr, "too many input files\n");
+ asexit(1);
+ }
+ sfp[inpfil] = afile(p, "", 0);
+ strcpy(srcfn[inpfil],afn);
+ if (inpfil == 0) {
+ if (lflag)
+ lfp = afile(p, "lst", 1);
+ if (oflag) {
+ ofp = afile(p, "rel", 1);
+ // save the file name if we have to delete it on error
+ strcpy(relFile,afn);
+ }
+ if (sflag)
+ tfp = afile(p, "sym", 1);
+ }
+ }
+ }
+ if (inpfil < 0)
+ usage();
+ syminit();
+ for (pass=0; pass<3; ++pass) {
+ if (gflag && pass == 1)
+ symglob();
+ if (aflag && pass == 1)
+ allglob();
+ if (oflag && pass == 2)
+ outgsd();
+ flevel = 0;
+ tlevel = 0;
+ ifcnd[0] = 0;
+ iflvl[0] = 0;
+ radix = 10;
+ srcline[0] = 0;
+ page = 0;
+ stb[0] = 0;
+ lop = NLPP;
+ cfile = 0;
+ incfil = -1;
+ for (i = 0; i <= inpfil; i++)
+ rewind(sfp[i]);
+ ap = areap;
+ while (ap) {
+ ap->a_fuzz = 0;
+ ap->a_size = 0;
+ ap = ap->a_ap;
+ }
+ fuzz = 0;
+ dot.s_addr = 0;
+ dot.s_area = &dca;
+ symp = ˙
+ minit();
+ while (as_getline()) {
+ cp = cb;
+ cpt = cbt;
+ ep = eb;
+ ip = ib;
/* JLH: if line begins with ";!", then
* pass this comment on to the output file
if (oflag && (pass == 1) &&
(ip[0] == ';') && (ip[1] == '!'))
{
- fprintf(ofp, "%s\n", ip );
+ fprintf(ofp, "%s\n", ip );
}
-
- if (setjmp(jump_env) == 0)
- asmbl();
-
- if (pass == 2) {
- diag();
- list();
- }
- }
- newdot(dot.s_area); /* Flush area info */
- if (flevel || tlevel)
- err('i');
- }
- if (oflag)
- outchk(HUGE, HUGE); /* Flush */
- if (sflag) {
- lstsym(tfp);
- } else
- if (lflag) {
- lstsym(lfp);
- }
- //printf ("aserr: %d\n", aserr);
- //printf ("fatalErrors: %d\n", fatalErrors);
- asexit(fatalErrors);
- return 0; // hush the compiler
+
+ if (setjmp(jump_env) == 0)
+ asmbl();
+
+ if (pass == 2) {
+ diag();
+ list();
+ }
+ }
+ newdot(dot.s_area); /* Flush area info */
+ if (flevel || tlevel)
+ err('i');
+ }
+ if (oflag)
+ outchk(HUGE, HUGE); /* Flush */
+ if (sflag) {
+ lstsym(tfp);
+ } else
+ if (lflag) {
+ lstsym(lfp);
+ }
+ //printf ("aserr: %d\n", aserr);
+ //printf ("fatalErrors: %d\n", fatalErrors);
+ asexit(fatalErrors);
+ return 0; // hush the compiler
}
-/*)Function VOID asexit(i)
+/*)Function VOID asexit(i)
*
- * int i exit code
+ * int i exit code
*
- * The function asexit() explicitly closes all open
- * files and then terminates the program.
+ * The function asexit() explicitly closes all open
+ * files and then terminates the program.
*
- * local variables:
- * int j loop counter
+ * local variables:
+ * int j loop counter
*
- * global variables:
- * FILE * ifp[] array of include-file file handles
- * FILE * lfp list output file handle
- * FILE * ofp relocation output file handle
- * FILE * tfp symbol table output file handle
- * FILE * sfp[] array of assembler-source file handles
+ * global variables:
+ * FILE * ifp[] array of include-file file handles
+ * FILE * lfp list output file handle
+ * FILE * ofp relocation output file handle
+ * FILE * tfp symbol table output file handle
+ * FILE * sfp[] array of assembler-source file handles
*
- * functions called:
- * int fclose() c-library
- * VOID exit() c-library
+ * functions called:
+ * int fclose() c-library
+ * VOID exit() c-library
*
- * side effects:
- * All files closed. Program terminates.
+ * side effects:
+ * All files closed. Program terminates.
*/
VOID
asexit(i)
int i;
{
- int j;
-
- if (lfp != NULL) fclose(lfp);
- if (ofp != NULL) fclose(ofp);
- if (tfp != NULL) fclose(tfp);
-
- for (j=0; j<MAXFIL && sfp[j] != NULL; j++) {
- fclose(sfp[j]);
- }
-
- /*for (j=0; j<MAXINC && ifp[j] != NULL; j++) {
- fclose(ifp[j]);
- }*/
- if (i) {
- // remove output file
- printf ("removing %s\n", relFile);
- remove(relFile);
- }
- exit(i);
+ int j;
+
+ if (lfp != NULL) fclose(lfp);
+ if (ofp != NULL) fclose(ofp);
+ if (tfp != NULL) fclose(tfp);
+
+ for (j=0; j<MAXFIL && sfp[j] != NULL; j++) {
+ fclose(sfp[j]);
+ }
+
+ /*for (j=0; j<MAXINC && ifp[j] != NULL; j++) {
+ fclose(ifp[j]);
+ }*/
+ if (i) {
+ // remove output file
+ printf ("removing %s\n", relFile);
+ remove(relFile);
+ }
+ exit(i);
}
-/*)Function VOID asmbl()
+/*)Function VOID asmbl()
*
- * The function asmbl() scans the assembler-source text for
- * (1) labels, global labels, equates, global equates, and local
- * symbols, (2) .if, .else, .endif, and .page directives,
- * (3) machine independent assembler directives, and (4) machine
- * dependent mnemonics.
+ * The function asmbl() scans the assembler-source text for
+ * (1) labels, global labels, equates, global equates, and local
+ * symbols, (2) .if, .else, .endif, and .page directives,
+ * (3) machine independent assembler directives, and (4) machine
+ * dependent mnemonics.
*
- * local variables:
- * mne * mp pointer to a mne structure
- * sym * sp pointer to a sym structure
- * tsym * tp pointer to a tsym structure
- * int c character from assembler-source
- * text line
- * area * ap pointer to an area structure
- * expr e1 expression structure
- * char id[] id string
- * char opt[] options string
- * char fn[] filename string
- * char * p pointer into a string
- * int d temporary value
- * int n temporary value
- * int uaf user area options flag
- * int uf area options
+ * local variables:
+ * mne * mp pointer to a mne structure
+ * sym * sp pointer to a sym structure
+ * tsym * tp pointer to a tsym structure
+ * int c character from assembler-source
+ * text line
+ * area * ap pointer to an area structure
+ * expr e1 expression structure
+ * char id[] id string
+ * char opt[] options string
+ * char fn[] filename string
+ * char * p pointer into a string
+ * int d temporary value
+ * int n temporary value
+ * int uaf user area options flag
+ * int uf area options
*
- * global variables:
- * area * areap pointer to an area structure
- * char ctype[] array of character types, one per
- * ASCII character
- * int flevel IF-ELSE-ENDIF flag will be non
- * zero for false conditional case
- * Addr_T fuzz tracks pass to pass changes in the
- * address of symbols caused by
- * variable length instruction formats
- * int ifcnd[] array of IF statement condition
- * values (0 = FALSE) indexed by tlevel
- * int iflvl[] array of IF-ELSE-ENDIF flevel
- * values indexed by tlevel
- * FILE * ifp[] array of include-file file handles
- * char incfn[][] array of include file names
- * int incline[] current include file line
- * int incfil current file handle index
- * for include files
- * Addr_T laddr address of current assembler line
- * or value of .if argument
- * int lmode listing mode
- * int lop current line number on page
- * char module[] module name string
- * int pass assembler pass number
- * int radix current number conversion radix:
- * 2 (binary), 8 (octal), 10 (decimal),
- * 16 (hexadecimal)
- * char stb[] Subtitle string buffer
- * sym * symp pointer to a symbol structure
- * char tb[] Title string buffer
- * int tlevel current conditional level
+ * global variables:
+ * area * areap pointer to an area structure
+ * char ctype[] array of character types, one per
+ * ASCII character
+ * int flevel IF-ELSE-ENDIF flag will be non
+ * zero for false conditional case
+ * Addr_T fuzz tracks pass to pass changes in the
+ * address of symbols caused by
+ * variable length instruction formats
+ * int ifcnd[] array of IF statement condition
+ * values (0 = FALSE) indexed by tlevel
+ * int iflvl[] array of IF-ELSE-ENDIF flevel
+ * values indexed by tlevel
+ * FILE * ifp[] array of include-file file handles
+ * char incfn[][] array of include file names
+ * int incline[] current include file line
+ * int incfil current file handle index
+ * for include files
+ * Addr_T laddr address of current assembler line
+ * or value of .if argument
+ * int lmode listing mode
+ * int lop current line number on page
+ * char module[] module name string
+ * int pass assembler pass number
+ * int radix current number conversion radix:
+ * 2 (binary), 8 (octal), 10 (decimal),
+ * 16 (hexadecimal)
+ * char stb[] Subtitle string buffer
+ * sym * symp pointer to a symbol structure
+ * char tb[] Title string buffer
+ * int tlevel current conditional level
*
- * functions called:
- * Addr_T absexpr() asexpr.c
- * area * alookup() assym.c
- * VOID clrexpr() asexpr.c
- * int digit() asexpr.c
- * char endline() aslex.c
- * VOID err() assubr.c
- * VOID expr() asexpr.c
- * FILE * fopen() c-library
- * char get() aslex.c
- * VOID getid() aslex.c
- * int getmap() aslex.c
- * char getnb() aslex.c
- * VOID getst() aslex.c
- * sym * lookup() assym.c
- * VOID machine() ___mch.c
- * mne * mlookup() assym.c
- * int more() aslex.c
- * VOID * new() assym.c
- * VOID newdot() asmain.c
- * VOID outall() asout.c
- * VOID outab() asout.c
- * VOID outchk() asout.c
- * VOID outrb() asout.c
- * VOID outrw() asout.c
- * VOID phase() asmain.c
- * VOID qerr() assubr.c
- * char * strcpy() c-library
- * char * strncpy() c-library
- * VOID unget() aslex.c
+ * functions called:
+ * Addr_T absexpr() asexpr.c
+ * area * alookup() assym.c
+ * VOID clrexpr() asexpr.c
+ * int digit() asexpr.c
+ * char endline() aslex.c
+ * VOID err() assubr.c
+ * VOID expr() asexpr.c
+ * FILE * fopen() c-library
+ * char get() aslex.c
+ * VOID getid() aslex.c
+ * int getmap() aslex.c
+ * char getnb() aslex.c
+ * VOID getst() aslex.c
+ * sym * lookup() assym.c
+ * VOID machine() ___mch.c
+ * mne * mlookup() assym.c
+ * int more() aslex.c
+ * VOID * new() assym.c
+ * VOID newdot() asmain.c
+ * VOID outall() asout.c
+ * VOID outab() asout.c
+ * VOID outchk() asout.c
+ * VOID outrb() asout.c
+ * VOID outrw() asout.c
+ * VOID phase() asmain.c
+ * VOID qerr() assubr.c
+ * char * strcpy() c-library
+ * char * strncpy() c-library
+ * VOID unget() aslex.c
*/
VOID
asmbl()
{
- register struct mne *mp;
- register struct sym *sp;
- register struct tsym *tp;
- register int c;
- struct area *ap;
- struct expr e1;
- char id[NCPS];
- char opt[NCPS];
- char fn[PATH_MAX];
- char *p;
- int d, n, uaf, uf;
- static struct area *abs_ap; /* pointer to current absolute area structure */
-
- laddr = dot.s_addr;
- lmode = SLIST;
+ register struct mne *mp;
+ register struct sym *sp;
+ register struct tsym *tp;
+ register int c;
+ struct area *ap;
+ struct expr e1;
+ char id[NCPS];
+ char opt[NCPS];
+ char fn[PATH_MAX];
+ char *p;
+ int d, n, uaf, uf;
+ static struct area *abs_ap; /* pointer to current absolute area structure */
+
+ laddr = dot.s_addr;
+ lmode = SLIST;
loop:
- if ((c=endline()) == 0) { return; }
- /*
- * If the first character is a digit then assume
- * a local symbol is being specified. The symbol
- * must end with $: to be valid.
- * pass 0:
- * Construct a tsym structure at the first
- * occurance of the symbol. Flag the symbol
- * as multiply defined if not the first occurance.
- * pass 1:
- * Load area, address, and fuzz values
- * into structure tsym.
- * pass 2:
- * Check for assembler phase error and
- * multiply defined error.
- */
- if (ctype[c] & DIGIT) {
- if (flevel)
- return;
- n = 0;
- while ((d = digit(c, 10)) >= 0) {
- n = 10*n + d;
- c = get();
- }
- if (c != '$' || get() != ':')
- qerr();
- tp = symp->s_tsym;
- if (pass == 0) {
- while (tp) {
- if (n == tp->t_num) {
- tp->t_flg |= S_MDF;
- break;
- }
- tp = tp->t_lnk;
- }
- if (tp == NULL) {
- tp=(struct tsym *) new (sizeof(struct tsym));
- tp->t_lnk = symp->s_tsym;
- tp->t_num = n;
- tp->t_flg = 0;
- tp->t_area = dot.s_area;
- tp->t_addr = dot.s_addr;
- symp->s_tsym = tp;
- }
- } else {
- while (tp) {
- if (n == tp->t_num) {
- break;
- }
- tp = tp->t_lnk;
- }
- if (tp) {
- if (pass == 1) {
- fuzz = tp->t_addr - dot.s_addr;
- tp->t_area = dot.s_area;
- tp->t_addr = dot.s_addr;
- } else {
- phase(tp->t_area, tp->t_addr);
- if (tp->t_flg & S_MDF)
- err('m');
- }
- } else {
- err('u');
- }
- }
- lmode = ALIST;
- goto loop;
- }
- /*
- * If the first character is a letter then assume a label,
- * symbol, assembler directive, or assembler mnemonic is
- * being processed.
- */
- if ((ctype[c] & LETTER) == 0) {
- if (flevel) {
- return;
- } else {
- qerr();
- }
- }
- getid(id, c);
- c = getnb();
- /*
- * If the next character is a : then a label is being processed.
- * A double :: defines a global label. If this is new label
- * then create a symbol structure.
- * pass 0:
- * Flag multiply defined labels.
- * pass 1:
- * Load area, address, and fuzz values
- * into structure symp.
- * pass 2:
- * Check for assembler phase error and
- * multiply defined error.
- */
- if (c == ':') {
- if (flevel)
- return;
- if ((c = get()) != ':') {
- unget(c);
- c = 0;
- }
- symp = lookup(id);
- if (symp == &dot)
- err('.');
- if (pass == 0)
- if ((symp->s_type != S_NEW) &&
- ((symp->s_flag & S_ASG) == 0))
- symp->s_flag |= S_MDF;
- if (pass != 2) {
- fuzz = symp->s_addr - dot.s_addr;
- symp->s_type = S_USER;
- symp->s_area = dot.s_area;
- symp->s_addr = dot.s_addr;
- } else {
- if (symp->s_flag & S_MDF)
- err('m');
- phase(symp->s_area, symp->s_addr);
- }
- if (c) {
- symp->s_flag |= S_GBL;
- }
- lmode = ALIST;
- goto loop;
- }
- /*
- * If the next character is a = then an equate is being processed.
- * A double == defines a global equate. If this is new variable
- * then create a symbol structure.
- */
- if (c == '=') {
- if (flevel)
- return;
- if ((c = get()) != '=') {
- unget(c);
- c = 0;
- }
- clrexpr(&e1);
- expr(&e1, 0);
- sp = lookup(id);
- if (sp == &dot) {
- outall();
- if (e1.e_flag || e1.e_base.e_ap != dot.s_area)
- err('.');
- } else
- if (sp->s_type != S_NEW && (sp->s_flag & S_ASG) == 0) {
- err('m');
- }
- sp->s_type = S_USER;
- sp->s_area = e1.e_base.e_ap;
- sp->s_addr = laddr = e1.e_addr;
- sp->s_flag |= S_ASG;
- if (c) {
- sp->s_flag |= S_GBL;
- }
- lmode = ELIST;
- goto loop;
- }
- unget(c);
- lmode = flevel ? SLIST : CLIST;
- if ((mp = mlookup(id)) == NULL) {
- if (!flevel)
- err('o');
- return;
- }
- /*
- * If we have gotten this far then we have found an
- * assembler directive or an assembler mnemonic.
- *
- * Check for .if, .else, .endif, and .page directives
- * which are not controlled by the conditional flags
- */
- switch (mp->m_type) {
-
- case S_IF:
- n = absexpr();
- if (tlevel < MAXIF) {
- ++tlevel;
- ifcnd[tlevel] = n;
- iflvl[tlevel] = flevel;
- if (n == 0) {
- ++flevel;
- }
- } else {
- err('i');
- }
- lmode = ELIST;
- laddr = n;
- return;
-
- case S_ELSE:
- if (ifcnd[tlevel]) {
- if (++flevel > (iflvl[tlevel]+1)) {
- err('i');
- }
- } else {
- if (--flevel < iflvl[tlevel]) {
- err('i');
- }
- }
- lmode = SLIST;
- return;
-
- case S_ENDIF:
- if (tlevel) {
- flevel = iflvl[tlevel--];
- } else {
- err('i');
- }
- lmode = SLIST;
- return;
-
- case S_PAGE:
- lop = NLPP;
- lmode = NLIST;
- return;
-
- default:
- break;
- }
- if (flevel)
- return;
- /*
- * If we are not in a false state for .if/.else then
- * process the assembler directives here.
- */
- switch (mp->m_type) {
-
- case S_EVEN:
- outall();
- laddr = dot.s_addr = (dot.s_addr + 1) & ~1;
- lmode = ALIST;
- break;
-
- case S_ODD:
- outall();
- laddr = dot.s_addr |= 1;
- lmode = ALIST;
- break;
-
- case S_BYTE:
- case S_WORD:
- do {
- clrexpr(&e1);
- expr(&e1, 0);
- if (mp->m_type == S_BYTE) {
- outrb(&e1, R_NORM);
- } else {
- outrw(&e1, R_NORM);
- }
- } while ((c = getnb()) == ',');
- unget(c);
- break;
-
- case S_ASCII:
- case S_ASCIZ:
- if ((d = getnb()) == '\0')
- qerr();
- while ((c = getmap(d)) >= 0)
- outab(c);
- if (mp->m_type == S_ASCIZ)
- outab(0);
- break;
-
- case S_ASCIS:
- if ((d = getnb()) == '\0')
- qerr();
- c = getmap(d);
- while (c >= 0) {
- if ((n = getmap(d)) >= 0) {
- outab(c);
- } else {
- outab(c | 0x80);
- }
- c = n;
- }
- break;
-
- case S_BLK:
- clrexpr(&e1);
- expr(&e1, 0);
- outchk(HUGE,HUGE);
- dot.s_addr += e1.e_addr*mp->m_valu;
- lmode = BLIST;
- break;
-
- case S_TITLE:
- p = tb;
- if ((c = getnb()) != 0) {
- do {
- if (p < &tb[NTITL-1])
- *p++ = c;
- } while ((c = get()) != 0);
- }
- *p = 0;
- unget(c);
- lmode = SLIST;
- break;
-
- case S_SBTL:
- p = stb;
- if ((c = getnb()) != 0) {
- do {
- if (p < &stb[NSBTL-1])
- *p++ = c;
- } while ((c = get()) != 0);
- }
- *p = 0;
- unget(c);
- lmode = SLIST;
- break;
-
- case S_MODUL:
- getst(id, getnb()); // a module can start with a digit
- if (pass == 0) {
- if (module[0]) {
- err('m');
- } else {
- strncpy(module, id, NCPS);
- }
- }
- lmode = SLIST;
- break;
-
- case S_OPTSDCC:
- p = optsdcc;
- if ((c = getnb()) != 0) {
- do {
- if (p < &optsdcc[NINPUT-1])
- *p++ = c;
- } while ((c = get()) != 0);
- }
- *p = 0;
- unget(c);
- lmode = SLIST;
+ if ((c=endline()) == 0) { return; }
+ /*
+ * If the first character is a digit then assume
+ * a local symbol is being specified. The symbol
+ * must end with $: to be valid.
+ * pass 0:
+ * Construct a tsym structure at the first
+ * occurance of the symbol. Flag the symbol
+ * as multiply defined if not the first occurance.
+ * pass 1:
+ * Load area, address, and fuzz values
+ * into structure tsym.
+ * pass 2:
+ * Check for assembler phase error and
+ * multiply defined error.
+ */
+ if (ctype[c] & DIGIT) {
+ if (flevel)
+ return;
+ n = 0;
+ while ((d = digit(c, 10)) >= 0) {
+ n = 10*n + d;
+ c = get();
+ }
+ if (c != '$' || get() != ':')
+ qerr();
+ tp = symp->s_tsym;
+ if (pass == 0) {
+ while (tp) {
+ if (n == tp->t_num) {
+ tp->t_flg |= S_MDF;
+ break;
+ }
+ tp = tp->t_lnk;
+ }
+ if (tp == NULL) {
+ tp=(struct tsym *) new (sizeof(struct tsym));
+ tp->t_lnk = symp->s_tsym;
+ tp->t_num = n;
+ tp->t_flg = 0;
+ tp->t_area = dot.s_area;
+ tp->t_addr = dot.s_addr;
+ symp->s_tsym = tp;
+ }
+ } else {
+ while (tp) {
+ if (n == tp->t_num) {
+ break;
+ }
+ tp = tp->t_lnk;
+ }
+ if (tp) {
+ if (pass == 1) {
+ fuzz = tp->t_addr - dot.s_addr;
+ tp->t_area = dot.s_area;
+ tp->t_addr = dot.s_addr;
+ } else {
+ phase(tp->t_area, tp->t_addr);
+ if (tp->t_flg & S_MDF)
+ err('m');
+ }
+ } else {
+ err('u');
+ }
+ }
+ lmode = ALIST;
+ goto loop;
+ }
+ /*
+ * If the first character is a letter then assume a label,
+ * symbol, assembler directive, or assembler mnemonic is
+ * being processed.
+ */
+ if ((ctype[c] & LETTER) == 0) {
+ if (flevel) {
+ return;
+ } else {
+ qerr();
+ }
+ }
+ getid(id, c);
+ c = getnb();
+ /*
+ * If the next character is a : then a label is being processed.
+ * A double :: defines a global label. If this is new label
+ * then create a symbol structure.
+ * pass 0:
+ * Flag multiply defined labels.
+ * pass 1:
+ * Load area, address, and fuzz values
+ * into structure symp.
+ * pass 2:
+ * Check for assembler phase error and
+ * multiply defined error.
+ */
+ if (c == ':') {
+ if (flevel)
+ return;
+ if ((c = get()) != ':') {
+ unget(c);
+ c = 0;
+ }
+ symp = lookup(id);
+ if (symp == &dot)
+ err('.');
+ if (pass == 0)
+ if ((symp->s_type != S_NEW) &&
+ ((symp->s_flag & S_ASG) == 0))
+ symp->s_flag |= S_MDF;
+ if (pass != 2) {
+ fuzz = symp->s_addr - dot.s_addr;
+ symp->s_type = S_USER;
+ symp->s_area = dot.s_area;
+ symp->s_addr = dot.s_addr;
+ } else {
+ if (symp->s_flag & S_MDF)
+ err('m');
+ phase(symp->s_area, symp->s_addr);
+ }
+ if (c) {
+ symp->s_flag |= S_GBL;
+ }
+ lmode = ALIST;
+ goto loop;
+ }
+ /*
+ * If the next character is a = then an equate is being processed.
+ * A double == defines a global equate. If this is new variable
+ * then create a symbol structure.
+ */
+ if (c == '=') {
+ if (flevel)
+ return;
+ if ((c = get()) != '=') {
+ unget(c);
+ c = 0;
+ }
+ clrexpr(&e1);
+ expr(&e1, 0);
+ sp = lookup(id);
+ if (sp == &dot) {
+ outall();
+ if (e1.e_flag || e1.e_base.e_ap != dot.s_area)
+ err('.');
+ } else
+ if (sp->s_type != S_NEW && (sp->s_flag & S_ASG) == 0) {
+ err('m');
+ }
+ sp->s_type = S_USER;
+ sp->s_area = e1.e_base.e_ap;
+ sp->s_addr = laddr = e1.e_addr;
+ sp->s_flag |= S_ASG;
+ if (c) {
+ sp->s_flag |= S_GBL;
+ }
+ lmode = ELIST;
+ goto loop;
+ }
+ unget(c);
+ lmode = flevel ? SLIST : CLIST;
+ if ((mp = mlookup(id)) == NULL) {
+ if (!flevel)
+ err('o');
+ return;
+ }
+ /*
+ * If we have gotten this far then we have found an
+ * assembler directive or an assembler mnemonic.
+ *
+ * Check for .if, .else, .endif, and .page directives
+ * which are not controlled by the conditional flags
+ */
+ switch (mp->m_type) {
+
+ case S_IF:
+ n = absexpr();
+ if (tlevel < MAXIF) {
+ ++tlevel;
+ ifcnd[tlevel] = n;
+ iflvl[tlevel] = flevel;
+ if (n == 0) {
+ ++flevel;
+ }
+ } else {
+ err('i');
+ }
+ lmode = ELIST;
+ laddr = n;
+ return;
+
+ case S_ELSE:
+ if (ifcnd[tlevel]) {
+ if (++flevel > (iflvl[tlevel]+1)) {
+ err('i');
+ }
+ } else {
+ if (--flevel < iflvl[tlevel]) {
+ err('i');
+ }
+ }
+ lmode = SLIST;
+ return;
+
+ case S_ENDIF:
+ if (tlevel) {
+ flevel = iflvl[tlevel--];
+ } else {
+ err('i');
+ }
+ lmode = SLIST;
+ return;
+
+ case S_PAGE:
+ lop = NLPP;
+ lmode = NLIST;
+ return;
+
+ default:
+ break;
+ }
+ if (flevel)
+ return;
+ /*
+ * If we are not in a false state for .if/.else then
+ * process the assembler directives here.
+ */
+ switch (mp->m_type) {
+
+ case S_EVEN:
+ outall();
+ laddr = dot.s_addr = (dot.s_addr + 1) & ~1;
+ lmode = ALIST;
+ break;
+
+ case S_ODD:
+ outall();
+ laddr = dot.s_addr |= 1;
+ lmode = ALIST;
+ break;
+
+ case S_BYTE:
+ case S_WORD:
+ do {
+ clrexpr(&e1);
+ expr(&e1, 0);
+ if (mp->m_type == S_BYTE) {
+ outrb(&e1, R_NORM);
+ } else {
+ outrw(&e1, R_NORM);
+ }
+ } while ((c = getnb()) == ',');
+ unget(c);
+ break;
+
+ case S_ASCII:
+ case S_ASCIZ:
+ if ((d = getnb()) == '\0')
+ qerr();
+ while ((c = getmap(d)) >= 0)
+ outab(c);
+ if (mp->m_type == S_ASCIZ)
+ outab(0);
+ break;
+
+ case S_ASCIS:
+ if ((d = getnb()) == '\0')
+ qerr();
+ c = getmap(d);
+ while (c >= 0) {
+ if ((n = getmap(d)) >= 0) {
+ outab(c);
+ } else {
+ outab(c | 0x80);
+ }
+ c = n;
+ }
+ break;
+
+ case S_BLK:
+ clrexpr(&e1);
+ expr(&e1, 0);
+ outchk(HUGE,HUGE);
+ dot.s_addr += e1.e_addr*mp->m_valu;
+ lmode = BLIST;
+ break;
+
+ case S_TITLE:
+ p = tb;
+ if ((c = getnb()) != 0) {
+ do {
+ if (p < &tb[NTITL-1])
+ *p++ = c;
+ } while ((c = get()) != 0);
+ }
+ *p = 0;
+ unget(c);
+ lmode = SLIST;
+ break;
+
+ case S_SBTL:
+ p = stb;
+ if ((c = getnb()) != 0) {
+ do {
+ if (p < &stb[NSBTL-1])
+ *p++ = c;
+ } while ((c = get()) != 0);
+ }
+ *p = 0;
+ unget(c);
+ lmode = SLIST;
+ break;
+
+ case S_MODUL:
+ getst(id, getnb()); // a module can start with a digit
+ if (pass == 0) {
+ if (module[0]) {
+ err('m');
+ } else {
+ strncpy(module, id, NCPS);
+ }
+ }
+ lmode = SLIST;
+ break;
+
+ case S_OPTSDCC:
+ p = optsdcc;
+ if ((c = getnb()) != 0) {
+ do {
+ if (p < &optsdcc[NINPUT-1])
+ *p++ = c;
+ } while ((c = get()) != 0);
+ }
+ *p = 0;
+ unget(c);
+ lmode = SLIST;
/*if (pass == 0) printf("optsdcc=%s\n", optsdcc);*/
break;
- case S_GLOBL:
- do {
- getid(id, -1);
- sp = lookup(id);
- sp->s_flag |= S_GBL;
- } while ((c = getnb()) == ',');
- unget(c);
- lmode = SLIST;
- break;
-
- case S_DAREA:
- getid(id, -1);
- uaf = 0;
- uf = A_CON|A_REL;
- if ((c = getnb()) == '(') {
- do {
- getid(opt, -1);
- mp = mlookup(opt);
- if (mp && mp->m_type == S_ATYP) {
- ++uaf;
- uf |= mp->m_valu;
- } else {
- err('u');
- }
- } while ((c = getnb()) == ',');
- if (c != ')')
- qerr();
- } else {
- unget(c);
- }
- if ((ap = alookup(id)) != NULL) {
- if (uaf && uf != ap->a_flag)
- err('m');
- } else {
- ap = (struct area *) new (sizeof(struct area));
- ap->a_ap = areap;
- strncpy(ap->a_id, id, NCPS);
- ap->a_ref = areap->a_ref + 1;
- ap->a_size = 0;
- ap->a_fuzz = 0;
- ap->a_flag = uaf ? uf : (A_CON|A_REL);
- areap = ap;
- }
- newdot(ap);
- lmode = SLIST;
- if (dot.s_area->a_flag & A_ABS)
- abs_ap = ap;
- break;
-
- case S_ORG:
- if (dot.s_area->a_flag & A_ABS) {
- char buf[NCPS];
- laddr = absexpr();
- sprintf(buf, "%s%x", abs_ap->a_id, laddr);
- if ((ap = alookup(buf)) == NULL) {
- ap = (struct area *) new (sizeof(struct area));
- *ap = *areap;
- ap->a_ap = areap;
- strncpy(ap->a_id, buf, NCPS);
- ap->a_ref = areap->a_ref + 1;
- ap->a_size = 0;
- ap->a_fuzz = 0;
- areap = ap;
- }
- newdot(ap);
- lmode = ALIST;
- dot.s_addr = dot.s_org = laddr;
- } else {
- err('o');
- }
- break;
-
- case S_RADIX:
- if (more()) {
- switch (getnb()) {
- case 'b':
- case 'B':
- radix = 2;
- break;
- case '@':
- case 'o':
- case 'O':
- case 'q':
- case 'Q':
- radix = 8;
- break;
- case 'd':
- case 'D':
- radix = 10;
- break;
- case 'h':
- case 'H':
- case 'x':
- case 'X':
- radix = 16;
- break;
- default:
- radix = 10;
- qerr();
- break;
- }
- } else {
- radix = 10;
- }
- lmode = SLIST;
- break;
-
- case S_INCL:
- d = getnb();
- p = fn;
- while ((c = get()) != d) {
- if (p < &fn[PATH_MAX-1]) {
- *p++ = c;
- } else {
- break;
- }
- }
- *p = 0;
- if ((++incfil == MAXINC) ||
- (ifp[incfil] = fopen(fn, "r")) == NULL) {
- --incfil;
- err('i');
- } else {
- lop = NLPP;
- incline[incfil] = 0;
- strcpy(incfn[incfil],fn);
- }
- lmode = SLIST;
- break;
-
- case S_FLAT24:
- if (more())
- {
- getst(id, -1);
-
- if (!as_strcmpi(id, "on"))
- {
- /* Quick sanity check: size of
- * Addr_T must be at least 24 bits.
- */
- if (sizeof(Addr_T) < 3)
- {
- warnBanner();
- fprintf(stderr,
- "Cannot enable Flat24 mode: "
- "host system must have 24 bit "
- "or greater integers.\n");
- }
- else
- {
- flat24Mode = 1;
- }
- }
- else if (!as_strcmpi(id, "off"))
- {
- flat24Mode = 0;
- }
- else
- {
- qerr();
- }
- }
- else
- {
- qerr();
- }
- lmode = SLIST;
- #if 0
- printf("as8051: ds390 flat mode %sabled.\n",
- flat24Mode ? "en" : "dis");
- #endif
- break;
-
-
- /*
- * If not an assembler directive then go to
- * the machine dependent function which handles
- * all the assembler mnemonics.
- */
- default:
- machine(mp);
- /* if cdb information the generate the line info */
- if (cflag && (pass == 1))
- DefineCDB_Line();
+ case S_GLOBL:
+ do {
+ getid(id, -1);
+ sp = lookup(id);
+ sp->s_flag |= S_GBL;
+ } while ((c = getnb()) == ',');
+ unget(c);
+ lmode = SLIST;
+ break;
+
+ case S_DAREA:
+ getid(id, -1);
+ uaf = 0;
+ uf = A_CON|A_REL;
+ if ((c = getnb()) == '(') {
+ do {
+ getid(opt, -1);
+ mp = mlookup(opt);
+ if (mp && mp->m_type == S_ATYP) {
+ ++uaf;
+ uf |= mp->m_valu;
+ } else {
+ err('u');
+ }
+ } while ((c = getnb()) == ',');
+ if (c != ')')
+ qerr();
+ } else {
+ unget(c);
+ }
+ if ((ap = alookup(id)) != NULL) {
+ if (uaf && uf != ap->a_flag)
+ err('m');
+ } else {
+ ap = (struct area *) new (sizeof(struct area));
+ ap->a_ap = areap;
+ strncpy(ap->a_id, id, NCPS);
+ ap->a_ref = areap->a_ref + 1;
+ ap->a_size = 0;
+ ap->a_fuzz = 0;
+ ap->a_flag = uaf ? uf : (A_CON|A_REL);
+ areap = ap;
+ }
+ newdot(ap);
+ lmode = SLIST;
+ if (dot.s_area->a_flag & A_ABS)
+ abs_ap = ap;
+ break;
+
+ case S_ORG:
+ if (dot.s_area->a_flag & A_ABS) {
+ char buf[NCPS];
+ laddr = absexpr();
+ sprintf(buf, "%s%x", abs_ap->a_id, laddr);
+ if ((ap = alookup(buf)) == NULL) {
+ ap = (struct area *) new (sizeof(struct area));
+ *ap = *areap;
+ ap->a_ap = areap;
+ strncpy(ap->a_id, buf, NCPS);
+ ap->a_ref = areap->a_ref + 1;
+ ap->a_size = 0;
+ ap->a_fuzz = 0;
+ areap = ap;
+ }
+ newdot(ap);
+ lmode = ALIST;
+ dot.s_addr = dot.s_org = laddr;
+ } else {
+ err('o');
+ }
+ break;
+
+ case S_RADIX:
+ if (more()) {
+ switch (getnb()) {
+ case 'b':
+ case 'B':
+ radix = 2;
+ break;
+ case '@':
+ case 'o':
+ case 'O':
+ case 'q':
+ case 'Q':
+ radix = 8;
+ break;
+ case 'd':
+ case 'D':
+ radix = 10;
+ break;
+ case 'h':
+ case 'H':
+ case 'x':
+ case 'X':
+ radix = 16;
+ break;
+ default:
+ radix = 10;
+ qerr();
+ break;
+ }
+ } else {
+ radix = 10;
+ }
+ lmode = SLIST;
+ break;
+
+ case S_INCL:
+ d = getnb();
+ p = fn;
+ while ((c = get()) != d) {
+ if (p < &fn[PATH_MAX-1]) {
+ *p++ = c;
+ } else {
+ break;
+ }
+ }
+ *p = 0;
+ if ((++incfil == MAXINC) ||
+ (ifp[incfil] = search_path_fopen(fn, "r")) == NULL) {
+ --incfil;
+ err('i');
+ } else {
+ lop = NLPP;
+ incline[incfil] = 0;
+ strcpy(incfn[incfil],fn);
+ }
+ lmode = SLIST;
+ break;
+
+ case S_FLAT24:
+ if (more())
+ {
+ getst(id, -1);
+
+ if (!as_strcmpi(id, "on"))
+ {
+ /* Quick sanity check: size of
+ * Addr_T must be at least 24 bits.
+ */
+ if (sizeof(Addr_T) < 3)
+ {
+ warnBanner();
+ fprintf(stderr,
+ "Cannot enable Flat24 mode: "
+ "host system must have 24 bit "
+ "or greater integers.\n");
+ }
+ else
+ {
+ flat24Mode = 1;
+ }
+ }
+ else if (!as_strcmpi(id, "off"))
+ {
+ flat24Mode = 0;
+ }
+ else
+ {
+ qerr();
+ }
+ }
+ else
+ {
+ qerr();
+ }
+ lmode = SLIST;
+ #if 0
+ printf("as8051: ds390 flat mode %sabled.\n",
+ flat24Mode ? "en" : "dis");
+ #endif
+ break;
+
+
+ /*
+ * If not an assembler directive then go to
+ * the machine dependent function which handles
+ * all the assembler mnemonics.
+ */
+ default:
+ machine(mp);
+ /* if cdb information then generate the line info */
+ if (cflag && (pass == 1))
+ DefineCDB_Line();
/* JLH: if -j, generate a line number symbol */
if (jflag && (pass == 1))
DefineNoICE_Line();
}
- }
- goto loop;
+ }
+ goto loop;
}
-/*)Function FILE * afile(fn, ft, wf)
+/*)Function FILE * afile(fn, ft, wf)
*
- * char * fn file specification string
- * char * ft file type string
- * int wf read(0)/write(1) flag
+ * char * fn file specification string
+ * char * ft file type string
+ * int wf read(0)/write(1) flag
*
- * The function afile() opens a file for reading or writing.
- * (1) If the file type specification string ft
- * is not NULL then a file specification is
- * constructed with the file path\name in fn
- * and the extension in ft.
- * (2) If the file type specification string ft
- * is NULL then the file specification is
- * constructed from fn. If fn does not have
- * a file type then the default source file
- * type dsft is appended to the file specification.
+ * The function afile() opens a file for reading or writing.
+ * (1) If the file type specification string ft
+ * is not NULL then a file specification is
+ * constructed with the file path\name in fn
+ * and the extension in ft.
+ * (2) If the file type specification string ft
+ * is NULL then the file specification is
+ * constructed from fn. If fn does not have
+ * a file type then the default source file
+ * type dsft is appended to the file specification.
*
- * afile() returns a file handle for the opened file or aborts
- * the assembler on an open error.
+ * afile() returns a file handle for the opened file or aborts
+ * the assembler on an open error.
*
- * local variables:
- * int c character value
- * FILE * fp filehandle for opened file
- * char * p1 pointer to filespec string fn
- * char * p2 pointer to filespec string fb
- * char * p3 pointer to filetype string ft
+ * local variables:
+ * int c character value
+ * FILE * fp filehandle for opened file
+ * char * p1 pointer to filespec string fn
+ * char * p2 pointer to filespec string fb
+ * char * p3 pointer to filetype string ft
*
- * global variables:
- * char afn[] afile() constructed filespec
- * char dsft[] default assembler file type string
- * char afn[] constructed file specification string
+ * global variables:
+ * char afn[] afile() constructed filespec
+ * char dsft[] default assembler file type string
+ * char afn[] constructed file specification string
*
- * functions called:
- * VOID asexit() asmain.c
- * FILE * fopen() c_library
- * int fprintf() c_library
+ * functions called:
+ * VOID asexit() asmain.c
+ * FILE * fopen() c_library
+ * int fprintf() c_library
*
- * side effects:
- * File is opened for read or write.
+ * side effects:
+ * File is opened for read or write.
*/
FILE *
char *ft;
int wf;
{
- register char *p2, *p3;
- register int c;
- FILE *fp;
-
- p2 = afn;
- p3 = ft;
-
- strcpy (afn, fn);
- p2 = strrchr (afn, FSEPX); // search last '.'
- if (!p2)
- p2 = afn + strlen (afn);
- if (p2 > &afn[PATH_MAX-4]) // truncate filename, if it's too long
- p2 = &afn[PATH_MAX-4];
- *p2++ = FSEPX;
-
- // choose a file-extension
- if (*p3 == 0) { // extension supplied?
- p3 = strrchr (fn, FSEPX); // no: extension in fn?
- if (p3)
- ++p3;
- else
- p3 = dsft; // no: default extension
- }
-
- while ((c = *p3++) != 0) { // strncpy
- if (p2 < &afn[PATH_MAX-1])
- *p2++ = c;
- }
- *p2++ = 0;
-
- if ((fp = fopen(afn, wf?"w":"r")) == NULL) {
- fprintf(stderr, "%s: cannot %s.\n", afn, wf?"create":"open");
- asexit(1);
- }
- return (fp);
+ register char *p2, *p3;
+ register int c;
+ FILE *fp;
+
+ p2 = afn;
+ p3 = ft;
+
+ strcpy (afn, fn);
+ p2 = strrchr (afn, FSEPX); // search last '.'
+ if (!p2)
+ p2 = afn + strlen (afn);
+ if (p2 > &afn[PATH_MAX-4]) // truncate filename, if it's too long
+ p2 = &afn[PATH_MAX-4];
+ *p2++ = FSEPX;
+
+ // choose a file-extension
+ if (*p3 == 0) { // extension supplied?
+ p3 = strrchr (fn, FSEPX); // no: extension in fn?
+ if (p3)
+ ++p3;
+ else
+ p3 = dsft; // no: default extension
+ }
+
+ while ((c = *p3++) != 0) { // strncpy
+ if (p2 < &afn[PATH_MAX-1])
+ *p2++ = c;
+ }
+ *p2++ = 0;
+
+ if ((fp = fopen(afn, wf?"w":"r")) == NULL) {
+ fprintf(stderr, "%s: cannot %s.\n", afn, wf?"create":"open");
+ asexit(1);
+ }
+ return (fp);
}
-/*)Function VOID newdot(nap)
+/*)Function VOID newdot(nap)
*
- * area * nap pointer to the new area structure
+ * area * nap pointer to the new area structure
*
- * The function newdot():
- * (1) copies the current values of fuzz and the last
- * address into the current area referenced by dot
- * (2) loads dot with the pointer to the new area and
- * loads the fuzz and last address parameters
- * (3) outall() is called to flush any remaining
- * bufferred code from the old area to the output
+ * The function newdot():
+ * (1) copies the current values of fuzz and the last
+ * address into the current area referenced by dot
+ * (2) loads dot with the pointer to the new area and
+ * loads the fuzz and last address parameters
+ * (3) outall() is called to flush any remaining
+ * bufferred code from the old area to the output
*
- * local variables:
- * area * oap pointer to old area
+ * local variables:
+ * area * oap pointer to old area
*
- * global variables:
- * sym dot defined as sym[0]
- * Addr_T fuzz tracks pass to pass changes in the
- * address of symbols caused by
- * variable length instruction formats
+ * global variables:
+ * sym dot defined as sym[0]
+ * Addr_T fuzz tracks pass to pass changes in the
+ * address of symbols caused by
+ * variable length instruction formats
*
- * functions called:
- * none
+ * functions called:
+ * none
*
- * side effects:
- * Current area saved, new area loaded, buffers flushed.
+ * side effects:
+ * Current area saved, new area loaded, buffers flushed.
*/
VOID
newdot(nap)
register struct area *nap;
{
- register struct area *oap;
-
- oap = dot.s_area;
- /* fprintf (stderr, "%s dot.s_area->a_size: %d dot.s_addr: %d\n",
- oap->a_id, dot.s_area->a_size, dot.s_addr); */
- oap->a_fuzz = fuzz;
- if (oap->a_flag & A_OVR) {
- // the size of an overlay is the biggest size encountered
- if (oap->a_size < dot.s_addr) {
- oap->a_size = dot.s_addr;
- }
- } else if (oap->a_flag & A_ABS) {
- oap->a_addr = dot.s_org;
- oap->a_size += dot.s_addr - dot.s_org;
- dot.s_addr = dot.s_org = 0;
- } else {
- oap->a_addr = 0;
- oap->a_size = dot.s_addr;
- }
- if (nap->a_flag & A_OVR) {
- // a new overlay starts at 0, no fuzz
- dot.s_addr = 0;
- fuzz = 0;
- } else if (nap->a_flag & A_ABS) {
- // a new absolute starts at org, no fuzz
- dot.s_addr = dot.s_org;
- fuzz = 0;
- } else {
- dot.s_addr = nap->a_size;
- fuzz = nap->a_fuzz;
- }
- dot.s_area = nap;
- outall();
+ register struct area *oap;
+
+ oap = dot.s_area;
+ /* fprintf (stderr, "%s dot.s_area->a_size: %d dot.s_addr: %d\n",
+ oap->a_id, dot.s_area->a_size, dot.s_addr); */
+ oap->a_fuzz = fuzz;
+ if (oap->a_flag & A_OVR) {
+ // the size of an overlay is the biggest size encountered
+ if (oap->a_size < dot.s_addr) {
+ oap->a_size = dot.s_addr;
+ }
+ } else if (oap->a_flag & A_ABS) {
+ oap->a_addr = dot.s_org;
+ oap->a_size += dot.s_addr - dot.s_org;
+ dot.s_addr = dot.s_org = 0;
+ } else {
+ oap->a_addr = 0;
+ oap->a_size = dot.s_addr;
+ }
+ if (nap->a_flag & A_OVR) {
+ // a new overlay starts at 0, no fuzz
+ dot.s_addr = 0;
+ fuzz = 0;
+ } else if (nap->a_flag & A_ABS) {
+ // a new absolute starts at org, no fuzz
+ dot.s_addr = dot.s_org;
+ fuzz = 0;
+ } else {
+ dot.s_addr = nap->a_size;
+ fuzz = nap->a_fuzz;
+ }
+ dot.s_area = nap;
+ outall();
}
-/*)Function VOID phase(ap, a)
+/*)Function VOID phase(ap, a)
*
- * area * ap pointer to area
- * Addr_T a address in area
+ * area * ap pointer to area
+ * Addr_T a address in area
*
- * Function phase() compares the area ap and address a
- * with the current area dot.s_area and address dot.s_addr
- * to determine if the position of the symbol has changed
- * between assembler passes.
+ * Function phase() compares the area ap and address a
+ * with the current area dot.s_area and address dot.s_addr
+ * to determine if the position of the symbol has changed
+ * between assembler passes.
*
- * local variables:
- * none
+ * local variables:
+ * none
*
- * global varaibles:
- * sym * dot defined as sym[0]
+ * global varaibles:
+ * sym * dot defined as sym[0]
*
- * functions called:
- * none
+ * functions called:
+ * none
*
- * side effects:
- * The p error is invoked if the area and/or address
- * has changed.
+ * side effects:
+ * The p error is invoked if the area and/or address
+ * has changed.
*/
VOID
struct area *ap;
Addr_T a;
{
- if (ap != dot.s_area || a != dot.s_addr)
- err('p');
+ if (ap != dot.s_area || a != dot.s_addr)
+ err('p');
}
char *usetxt[] = {
- "Usage: [-dqxjgalopsf] file1 [file2 file3 ...]",
- " d decimal listing",
- " q octal listing",
- " x hex listing (default)",
- " j add line number and debug information to file", /* JLH */
- " g undefined symbols made global",
- " a all user symbols made global",
- " l create list output file1[LST]",
- " o create object output file1[REL]",
- " s create symbol output file1[SYM]",
- " p disable listing pagination",
- " f flag relocatable references by ` in listing file",
- " ff flag relocatable references by mode in listing file",
- "",
- 0
+ "Usage: [-dqxjgalopsf][ -I<dir> ] file1 [file2 file3 ...]",
+ " d decimal listing",
+ " q octal listing",
+ " x hex listing (default)",
+ " j add line number and debug information to file", /* JLH */
+ " g undefined symbols made global",
+ " a all user symbols made global",
+ " l create list output file1[LST]",
+ " o create object output file1[REL]",
+ " s create symbol output file1[SYM]",
+ " p disable listing pagination",
+ " f flag relocatable references by ` in listing file",
+ " ff flag relocatable references by mode in listing file",
+ "-I<dir> Add the named directory to the include file",
+ " search path. This option may be used more than once.",
+ " Directories are searched in the order given.",
+ "",
+ 0
};
-/*)Function VOID usage()
+/*)Function VOID usage()
*
- * The function usage() outputs to the stderr device the
- * assembler name and version and a list of valid assembler options.
+ * The function usage() outputs to the stderr device the
+ * assembler name and version and a list of valid assembler options.
*
- * local variables:
- * char ** dp pointer to an array of
- * text string pointers.
+ * local variables:
+ * char ** dp pointer to an array of
+ * text string pointers.
*
- * global variables:
- * char cpu[] assembler type string
- * char * usetxt[] array of string pointers
+ * global variables:
+ * char cpu[] assembler type string
+ * char * usetxt[] array of string pointers
*
- * functions called:
- * VOID asexit() asmain.c
- * int fprintf() c_library
+ * functions called:
+ * VOID asexit() asmain.c
+ * int fprintf() c_library
*
- * side effects:
- * program is terminated
+ * side effects:
+ * program is terminated
*/
VOID
usage()
{
- register char **dp;
+ register char **dp;
- fprintf(stderr, "\nASxxxx Assembler %s (%s)\n\n", VERSION, cpu);
- for (dp = usetxt; *dp; dp++)
- fprintf(stderr, "%s\n", *dp);
- asexit(1);
+ fprintf(stderr, "\nASxxxx Assembler %s (%s)\n\n", VERSION, cpu);
+ for (dp = usetxt; *dp; dp++)
+ fprintf(stderr, "%s\n", *dp);
+ asexit(1);
}
projects / fw / sdcc / commitdiff